crossnote said:Let's go back to the Holocaust. You seem to be saying there is no way to tell if those millions that were targeted as Jews were in fact Jews whereas most everyone except antisemites affirm they were Jews. You don't affirm that those marked as Jews by the Nazis were actually Jews?
Not to intervene too much in the argument here, but are you making an argument? The question seems to be how one could know/prove they were Jewish. What you are proposing only begs the question since SeaBass' next logical question should be, "well, how did the Nazis know they were Jewish?" I think his point is that such a thing is difficult if not impossible to prove with scientific certainty - there is no library or genealogy stretching back to the various sons of Jacob so that one could "prove" their ancestry.
Personally, I think people know whether or not they were Jewish because such a pedigree is passed down by word-of-mouth through families - not to mention DNA testing that confirms the relation among people that claim to be Jewish. In any case, appealing to Nazi methodology not only begs the question, but it's rather dubious to rely on their "research" to make one's case.